Abstract
This invention provides methods of beam-indexed spatial modulation (BISM) for multiple-input and multiple-output (MIMO). It is not only enhance the efficiency of MIMO using, but also addresses the compatibility problems in Spatial Modulation (SM-MIMO) and Orthogonal Frequency Division Multiplexing Index Modulation (OFDM-IM), and improves the speed problem and spectral efficiency in the current index modulation architectures.